These ebuilds come from http://gentoo.zugaina.org/.
If you have some problems, go to the official site first.
libchroma : Chroma is a set of widgets based on GTK+2 ( http://bmpx.beep-media-player.org/site/Chroma )
mcs : Modular configuration system. A library that provides a backend to store an application's configuration with either an XML-file or GConf backend. ( http://bmpx.beep-media-player.org/site/Chroma )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a zugaina
For Paludis use this rsync : rsync://gentoo.zugaina.org/zugaina-portage
If you have a problem : ycarus(-at-)zugaina.org